Note F - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016		Sep. 30, 2015
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Customer 1 [Member]
Revenue, Net	$ 17,090		$ 6,789
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Customer 2 [Member]
Revenue, Net		[1]	3,035
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member]
Revenue, Net	17,090		9,824
Revenue, Net	$ 34,067		$ 21,585

[1]